Here](https://youtu.be/nkvVR-sKJT8) is an essential video that distils a lot about geometry, that anyone finishing school should know.

A bit of history, a bit of philoophy, a bit of math, from ancient Greece all the way to our modern understanding of spacetime and the universe.

Well worth the time of watching the whole series.

I recently came across the channel of toon sandwich. A very innovative take on popular culture.

Here is a short and good one: Sean Bean does not die

I was reminded in the Natural History Museum in New York that the Mediterranean sea was dry at some point.

If the connection to the Atlantic Occean was cut off, it would dry again. That is why it is so salty, especially in the East, it evaporates more than it can be replenished from rivers.

It did not take too long to go from there, to this video with graphics and some speculation about the consequences of no water in the Mediterranean.

Here is a short video explaining the first mass extinction on Earth.

It was caused by oxygen.

Here is a brief description fo the terracotta warriors. A very recent and significant archaeological discovery.

Here is a very scary video of bacteria evolving antibiotic resistance and growing in 1000x more antibiotic concentration than they could originally tolerate.

The Evolution of Bacteria on a "Mega-Plate" Petri Dish from Harvard Medical School on Vimeo.